tiles - Using GDAL TMS in QGIS?

I'm trying to load tiles from the below server to QGIS by GDAL TMS support (like here: https://www.3liz.com/blog/rldhont/index.php?post/2012/07/17/OpenStreetMap-Tiles-in-QGIS), but it doesn't work - any hints on what's wrong with my XML?

    
        http://ec2.cdn.ecmaps.de/WmsGateway.ashx.jpg?Experience=kompass&MapStyle=KOMPASS%20Touristik&TileX=${x}&TileY=${y}&ZoomLevel=${z}
    
    
    -20037508.34
    20037508.34
    20037508.34

    -20037508.34
    18
    1
    1
    top
    
    EPSG:3857
    image/jpeg
    256
    256

    3